A BDH body part is an anatomical structure located in the head and neck area. It is a term used to describe the anatomical structures of the bone, the soft-tissue structures, and the associated structures at the base of the skull.
The BDH body part consists of the temporal bone, the parietal bone, the occipital bone, the sphenoid bone, the ethmoid bone, and the infratemporal fossa. This region is known as the base of the skull because it is where the base of the cranium attaches to the head.
The temporal bone has two sections, the squama temporalis and the petrous part. The petrous part consists of the jugular foramen, which is a large opening that houses the temporal muscle and the internal auditory meatus, which allows the transmission of sound to the inner ear. The squama temporalis is a bony plate that has several important structures, such as the stylomastoid foramen, the carotid canal, and the tympanic cavity.
The parietal bone lies between the squama temporalis and the temporal bone on the left side of the suspension bridge. This bone has a number of important structures, such as the coronoid fossa and the frontozygomatic suture. The occipital bone is located at the back of the skull and houses the occipital protuberance, which contains the occipital nerve, and the foramen magnum, which is the point of attachment for the spinal cord. The sphenoid bone is located in the midline of the skull and houses several important structures such as the sella turcica, the sphenoid sinuses, and the optic foramen.
The ethmoid bone is located between the sphenoid and temporal bones. It has several important structures, such as the cribriform plate which contains the olfactory nerve and the ethmoid sinuses. The infratemporal fossa is located beneath the temporal bone and contains the pterygoid muscles, the pterygoid hamulus, the maxillary nerve, and the accessory nerve.
The BDH body part provides the foundation for the anatomy of the skull. These structures protect the important sensory organs and provide a platform for muscles and ligaments to attach to the skull. This region is especially important to maintain the offset between the neurological structures, muscles, and facial structures which all interact to form facial expressions and express emotion.